diff --git a/src/core/Variant.h b/src/core/Variant.h
index 4295a641f940833bdd7558f6c9b86e93d669d5a5..94c281593e2592e9dee4c26c14fd4ba947a70e87 100644
--- a/src/core/Variant.h
+++ b/src/core/Variant.h
@@ -22,6 +22,7 @@
 #pragma once
 
 // suppress conversion warning that is emitted by icpc compiler with `-Werror`
+#include "waLBerlaDefinitions.h"
 #if ( defined WALBERLA_CXX_COMPILER_IS_INTEL )
 #pragma warning(push)
 #pragma warning disable 68